Hammer mills work on the principle that most materials will crush, shatter, or pulverize upon impact. Material is fed into the mill’s chamber through the feed chute, typically by gravity, where it is struck by ganged hammers attached to a shaft that rotates at high speed inside the mill’s grinding chamber.

MF2048 Hammermills and Roller Mills - KSRE Bookstore - Kansas . is a function of hammer-tip speed; hammer design and placement; screen design and to 15 percent less than material ground by a hammermill.

MUNSON's HammerHead™ Hammer Mills reduce a broad range of friable, non-friable and fibrous materials into particle sizes from one inch (25.4 mm) down to 200 mesh, determined by friability of the material.